CN212138202U - Liquid cooling system combining data center immersion type and indirect contact type - Google Patents
Liquid cooling system combining data center immersion type and indirect contact type Download PDFInfo
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- CN212138202U CN212138202U CN202021027971.2U CN202021027971U CN212138202U CN 212138202 U CN212138202 U CN 212138202U CN 202021027971 U CN202021027971 U CN 202021027971U CN 212138202 U CN212138202 U CN 212138202U
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Abstract
The utility model provides a liquid cooling system of data center submergence formula and indirect contact combination combines submergence formula liquid cooling technique and contact liquid cooling technique, overcomes the loss of the pump that appears in the single-phase direct submergence formula liquid cooling of tradition great, reduced data center's greenization degree scheduling problem. The liquid cooling system comprises a liquid cooling cabinet, a cold quantity distribution unit, a water chilling unit, heat extraction equipment, a liquid storage tank, a refrigerant pump and the like. The liquid cooling cabinet comprises a liquid cooling box body, a server and a layered cold plate, wherein a single-phase refrigerant is filled in the box body, the server is immersed in the single-phase refrigerant, and the layered cold plate is non-uniformly fixed in the box body from bottom to top. The utility model discloses can avoid the pump to the drive of high-viscosity single-phase refrigerant and the circulation of single-phase refrigerant outside the box to flow, and can replace the compressor operation completely throughout the year, really realize utilizing the natural cold source to carry out the data center refrigeration, improve data center PUE value, realize that data center guarantees the cooling effect in the energy can be saved.
Description
Technical Field
The utility model belongs to the technical field of data center heat abstractor technique and specifically relates to a liquid cooling system of data center submergence formula and indirect contact combination.
Background
The data center is a large-power-consumption household, the electronic information equipment and the refrigerating unit which run continuously all the year round can consume a large amount of electric energy, and the effective heat dissipation mode is adopted for the data center to reduce the power consumption of the refrigerating unit, so that the energy conservation of the whole data center is facilitated. And the coming of the 5G era must further increase the power consumption and heat dissipation of the data computer room, and bring new challenges to the existing heat dissipation technology of the data computer room.
Immersion liquid cooling is a new heat dissipation technology that has recently received much attention from the industry. Immersion liquid cooling has significant advantages. Firstly, in the immersion type liquid cooling, the cooling liquid is directly contacted with heating equipment, so that the convection resistance is low, and the heat transfer coefficient is high; secondly, the cooling liquid has higher heat conductivity and specific heat capacity, and the change rate of the operating temperature is smaller; thirdly, the mode does not need a fan, reduces energy consumption and noise and has high refrigeration efficiency; finally, the cooling liquid has excellent insulating property, high flash point and no flammability, and is non-toxic, harmless and non-corrosive. Therefore, the liquid cooling technology is suitable for large-scale data centers, super computing, industries and other computing fields and scientific research institutions with high requirements on heat flux density and green energy conservation, and particularly has obvious advantages for data centers which are located in severe cold and high altitude areas or have special terrain and limited space, have high requirements on environmental noise, are close to places where people work and live, and need to be muted. The single-phase direct immersion type liquid cooling means that the single-phase refrigerant does not change phase in the process of absorbing heat of a server, the single-phase refrigerant continuously circulates and flows under the driving of a pump, the single-phase refrigerant absorbs heat in a box body and rises the temperature, then flows out along a pipeline, enters a heat exchanger, and flows back to the box body again after heat exchange to complete one circulation. The single-phase refrigerant used by the single-phase direct immersion type liquid cooling has high viscosity coefficient and poor fluidity, increases the loss of a pump, and reduces the greening degree of a data center. Therefore, in order to solve the above technical problems, it is necessary to upgrade the existing single-phase immersion liquid cooling technology to achieve effective heat dissipation of the data center and effective control of the greening degree of the data center.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: great, the greenization degree scheduling problem of data center has been reduced to the loss of the pump that appears in the single-phase direct submergence formula liquid cooling of tradition, the utility model aims to provide a liquid cooling system that submergence formula and indirect contact combine, this liquid cooling system can avoid the pump to the drive of the single-phase refrigerant of high viscosity and the circulation flow of single-phase refrigerant outside the box, and this cooling system can realize the operation of substituting the compressor completely throughout the year, really realize utilizing the natural cold source to carry out the data center refrigeration, improve data center PUE value, realize that data center can guarantee the cooling effect in the energy can be saved.
The technical scheme is as follows: in order to achieve the above object, the liquid cooling system of the present invention comprises a liquid cooling cabinet, a cold energy distribution unit, a water chiller, a liquid storage tank and a refrigerant pump; the liquid cooling cabinet comprises a liquid cooling box body, a server and a layered cold plate; the single-phase refrigerant is filled in the box body, the server is immersed in the single-phase refrigerant, and the layered cold plate is fixed in the box body from top to bottom from sparse to dense; the inlet end of the layered cold plate is connected with the cold quantity distribution unit, and the layered cold plate is sequentially connected with the water pump, the liquid storage tank, the water chilling unit and the cold quantity distribution unit to form a circulation loop.
Preferably, the single-phase refrigerant is a fluorinated liquid with a boiling point lower than the normal working temperature of the server.
Preferably, the cold plates are arranged in parallel, and the flow of the refrigerant can be independently controlled in each cold plate layer.
Furthermore, the liquid cooling system also comprises a heat extraction device, wherein the heat extraction device is used for cooling high-temperature return water and can adopt an evaporative condenser or a cooling tower.
Further, the liquid cooling system further comprises a waste heat recovery device, and the waste heat recovery device is used for recovering and utilizing waste heat of hot water in the liquid storage tank.
The working principle of the liquid cooling system is as follows:
(1) the refrigerant flows through the pipeline by the refrigerant pump to flow to the layer-mounted cold plates which are non-uniformly arranged in the box body, the layer-mounted cold plates absorb heat generated by the server and transferred to a single refrigerant, and the layer-mounted cold plates on the upper part of the box body are denser and can carry away more heat, so that the density of the single-phase refrigerant on the upper part of the box body is higher, the single-phase refrigerant generates density difference with the single-phase refrigerant on the lower part of the box body, natural circulation is generated under the action of gravity, the heat exchange effect is improved, and the disturbance of a.
(2) The hot water discharged from the refrigerant outlet of the liquid cooling box body reaches the liquid storage tank through the water collector, and part of heat is taken away through the waste heat recovery device.
(3) The refrigerant in the liquid storage tank further enters the water chilling unit, the temperature is reduced under the action of the heat extraction equipment, and the refrigerant flows into the cold plate of each layer through the cold quantity distribution unit to absorb the heat of the single-phase refrigerant.
Has the advantages that: compared with the prior art, the utility model discloses following beneficial effect has:
(1) the layered cold plates are non-uniformly arranged in the box body, namely, the layered cold plates are fixed in the box body from top to bottom in a sparse mode, the heat exchange area is large, the single-phase refrigerant generates natural circulation in the box body due to density difference, and disturbance of a circulation loop or a propeller is not needed, so that the PUE value of a data center is improved. In addition, a single refrigerant density difference can be generated by adjusting the flow of the refrigerant of the cold plates assembled in each layer.
(2) The waste heat recovery device is used for taking away heat of a part of refrigerant in the liquid storage tank, so that the load of the water chilling unit is reduced on one hand, and on the other hand, recovered waste heat can be utilized, such as domestic hot water.
(3) The system realizes 'waterless' cooling of the server and realizes the operation of a compressor.
Drawings
Fig. 1 is a schematic diagram of a system architecture and circuit according to an embodiment of the present invention;
fig. 2 is a front view of an internal structure of a liquid cooling cabinet according to an embodiment of the present invention;
fig. 3 is a top view of the internal structure of the liquid cooling cabinet in the embodiment of the present invention.
Description of reference numerals: the system comprises a tank 1, a single-phase refrigerant 2, a refrigerant inlet/outlet 3, a refrigerant inlet 301, a refrigerant outlet 302, a first connecting piece 4, a cooling plate 5, a server 6, a server fastener 7 and a second connecting piece 8.
Detailed Description
The operation of the systems of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the embodiment of the utility model discloses a liquid cooling system of data center submergence formula and indirect contact combination, its structure includes liquid cooling rack, cold volume distribution unit, cooling water set, heat extraction equipment, liquid storage pot, refrigerant pump, waste heat recovery device etc.. As shown in fig. 2-3, the liquid cooling cabinet comprises a liquid cooling box body 1, a server 6 and a layered cold plate 5, wherein a single-phase refrigerant 2 is arranged in the box body 1, the server 6 is immersed in the single-phase refrigerant 2, and the layered cold plate 5 is fixed in the box body 1 from bottom to top by a first connecting piece 4 and a second connecting piece 8 from sparse to dense. The single-phase refrigerant 2 adopts fluorinated liquid, and the boiling point is lower than the normal working temperature of the server 6. The layered cold plates 5 are installed in parallel and fixed in the box body 1 from bottom to top in a sparse mode, the refrigerant flow can be independently controlled by the layered cold plates 5, the refrigerant liquid inlet 301 of the layered cold plates 5 is connected with the cold quantity distribution unit, and the layered cold plates 5 are sequentially connected with the refrigerant pump, the liquid storage tank, the water chilling unit and the cold quantity distribution unit to form a circulation loop. The heat extraction equipment is used for cooling high-temperature return water and can adopt an evaporative condenser or a cooling tower. The waste heat recovery device is used for recovering and utilizing the waste heat of the hot water in the liquid storage tank.
The utility model discloses liquid cooling system's working process as follows:
the refrigerant flows through the pipeline by the refrigerant pump to flow to the layer-mounted cold plates 5 which are non-uniformly arranged in the box body 1, the layer-mounted cold plates 5 absorb heat generated by the server 6 and transferred to the single refrigerant 2, the layer-mounted cold plates 5 on the upper part of the box body 1 are denser and can carry away more heat, the density of the single-phase refrigerant 2 on the upper part of the box body 1 is higher, the density difference is generated between the single-phase refrigerant 2 on the upper part of the box body 1 and the single-phase refrigerant 2 on the lower part of the box body 1, natural circulation is generated under the action of gravity, the heat exchange. The hot water discharged from the refrigerant outlet 302 of the box body 1 reaches the liquid storage tank through the water collector, and part of the heat is taken away through the waste heat recovery device. The refrigerant in the liquid storage tank further enters the water chilling unit, the temperature is reduced under the action of the heat extraction equipment, and the refrigerant flows into the cold plates 5 of each layer through the cold quantity distribution unit to absorb the heat of the single-phase refrigerant 2.
The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a liquid cooling system of data center submergence formula and indirect contact combination which characterized in that: the system comprises a liquid cooling cabinet, a cold quantity distribution unit, a water chilling unit, a liquid storage tank and a refrigerant pump; the liquid cooling cabinet comprises a liquid cooling box body, a server and a layered cold plate; the single-phase refrigerant is filled in the box body, the server is immersed in the single-phase refrigerant, and the layered cold plate is fixed in the box body from top to bottom from sparse to dense; the inlet end of the layered cold plate is connected with the cold quantity distribution unit, and the layered cold plate is sequentially connected with the refrigerant pump, the liquid storage tank, the water chilling unit and the cold quantity distribution unit to form a circulation loop.
2. The data center immersion and indirect contact combination liquid cooling system of claim 1, wherein: the single-phase refrigerant adopts fluorinated liquid, and the boiling point of the single-phase refrigerant is lower than the normal working temperature of the server.
3. The data center immersion and indirect contact combination liquid cooling system of claim 1, wherein: the cold plates are arranged in parallel, and the flow of the refrigerant can be independently controlled in each cold plate layer.
4. The data center immersion and indirect contact combination liquid cooling system of claim 1, wherein: the system also comprises heat extraction equipment, wherein the heat extraction equipment is used for cooling the high-temperature return water and adopts an evaporative condenser or a cooling tower.
5. The data center immersion and indirect contact combination liquid cooling system of claim 1, wherein: the system also comprises a waste heat recovery device, and the waste heat recovery device is used for recovering and utilizing the waste heat of the hot water in the liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021027971.2U CN212138202U (en) | 2020-06-08 | 2020-06-08 | Liquid cooling system combining data center immersion type and indirect contact type |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021027971.2U CN212138202U (en) | 2020-06-08 | 2020-06-08 | Liquid cooling system combining data center immersion type and indirect contact type |
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| CN212138202U true CN212138202U (en) | 2020-12-11 |
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| CN202021027971.2U Active CN212138202U (en) | 2020-06-08 | 2020-06-08 | Liquid cooling system combining data center immersion type and indirect contact type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11533829B2 (en) | 2021-04-09 | 2022-12-20 | Microsoft Technology Licensing, Llc | Systems and methods for immersion-cooled datacenters |
| US11606878B2 (en) | 2021-04-09 | 2023-03-14 | Microsoft Technology Licensing, Llc | Systems and methods for immersion-cooled datacenters |
-
2020
- 2020-06-08 CN CN202021027971.2U patent/CN212138202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11533829B2 (en) | 2021-04-09 | 2022-12-20 | Microsoft Technology Licensing, Llc | Systems and methods for immersion-cooled datacenters |
| US11606878B2 (en) | 2021-04-09 | 2023-03-14 | Microsoft Technology Licensing, Llc | Systems and methods for immersion-cooled datacenters |
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